IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2014  > Vol11 No.4
Using Path Analysis to Identify the Influence of Climatic Factors on Spring Peak Flow Dominated by Snowmelt in an Alpine Watershed
ZHANG Fei-Yun; LI Lan-Hai; AHMAD Sajjad; LI Xue-Mei
Corresponding AuthorLI Lan-Hai
2014-07
Source PublicationJournal of Mountain Science
Volume11Issue:4Pages:990-1000
AbstractSpring snowmelt peak flow (SSPF) can cause serious damage. Precipitation as rainfall directly contributes to the SSPF and influences the characteristics of the SSPF; while temperature indirectly impacts the SSPF by shaping snowmelt rate and determining the soil frozen state which partitions snowmelt water into surface runoff and soil infiltration water in spring. It is necessary to identify the important and significant paths of climatic factors influencing the SSPF and provide estimates of the magnitude and significance of hypothesized causal connections between climatic factors and the SSPF. This study used path analysis with a selection of five factors – the antecedent precipitation index (API); spring precipitation (SP); winter precipitation as snowfall (WS); <0°C temperature accumulation in winter (|ATN|); and average >0°C temperature accumulation in spring (AT) – to analyze their influences on the SSPF in the Kaidu River in Xinjiang; China. The results show that |ATN|; AT and WS have a significant correlation with the SSPF; while API and SP do not show a significant correlation. AT and WS directly influence the SSPF; while as the influence of |ATN| on SSPF is indirect through WS and AT. The indirect influence of |ATN| on SSPF through WS accounts for 69% of the total influence of |ATN| on SSPF. Compared to the multiple linear regression method; path analysis provides additional valuable information; including influencing paths from independent variables to the dependent variable as well as direct and indirect impacts of external variables on the internal variable. This information can help improve the description of snow melt and spring runoff in hydrologic models as well as the planning and management of water resources.
KeywordSnowmelt Peak Flow Path Analysis Alpine Watershed
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7002
CollectionJournal of Mountain Science_Journal of Mountain Science-2014_Vol11 No.4
Corresponding AuthorLI Lan-Hai
Recommended Citation
GB/T 7714
ZHANG Fei-Yun,LI Lan-Hai,AHMAD Sajjad,et al. Using Path Analysis to Identify the Influence of Climatic Factors on Spring Peak Flow Dominated by Snowmelt in an Alpine Watershed[J]. Journal of Mountain Science,2014,11(4):990-1000.
APA ZHANG Fei-Yun,LI Lan-Hai,AHMAD Sajjad,&LI Xue-Mei.(2014).Using Path Analysis to Identify the Influence of Climatic Factors on Spring Peak Flow Dominated by Snowmelt in an Alpine Watershed.Journal of Mountain Science,11(4),990-1000.
MLA ZHANG Fei-Yun,et al."Using Path Analysis to Identify the Influence of Climatic Factors on Spring Peak Flow Dominated by Snowmelt in an Alpine Watershed".Journal of Mountain Science 11.4(2014):990-1000.
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